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ID:37343231
大小:8.17 MB
页数:82页
时间:2019-05-22
《交联聚膦腈微纳米材料的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、上海交通大学硕士学位论文交联聚膦腈微纳米材料的研究姓名:朱龑申请学位级别:硕士专业:材料学指导教师:唐小真20090101上海交通大学硕士论文ABSTRACTTheformationmechanismofthecrosslinkedphosphazene-containingnanofiberswasresearchedinthisthesis.Multi-morphologycontrolbetweenmonodispersemircospheresanduniformnanofiberswassuccessfullyachievedbyfacileapp
2、roach,adjustingtheratioofsolventcomposition.Wealsogetthenovelfunctionalcrosslinkedmicrosphereswithactivehydroxylgroupsviaone-stepprecipitationpolymerizationbypolycondensation.Thesecrosslinkedphosphazene-containingnanoscalematerialsweremixedintoPVAandanovelcontrolleddrugdeliverysyst
3、emwasformed.Basedonthesinglefactorresearchonthenanofiberspreparation,focusedontemperature,poweroftheultrasonicbath,concentrationofmonomer,concentrationoftriethylamine,theacid-acceptor,andthesolvent,wegettheinitialassumptionaboutthenanofibersformationmechanism.Theoriginalparticleswe
4、reformedunderspecialmoleculeweightandcrosslinkingdegree.Then,theseparticleswerearrangedinspecialdirectionwiththechloridebond.ThecrystalofTEA/HClalsoplayedanimportantroleinthisprocess.Afterthestructureofnanofiberswasformed,theygrewupbyabsorbingtheoligmers.Monodispersecyclotriphospha
5、zenecontainingmicrosphereswithactivehydroxylgroupswerepreparedviaasimple,economicandenvironmentallyfriendlyroute,one-stepprecipitationpolymerization.Theresultingpolymerparticleshadsphericalshapesandsmoothsurfaceswithnarrowparticledispersal.FromtheFTIRspectraandtheresultofelementala
6、nalysis,itwasobviousthatthecontentofthehydroxylgroupsonthesurfacewasdependeduponthefeedratio.Thesuccessfulesterificationwithbenzoxychloridedemonstratedthehighactiveofthehydroxylgroupsonthemicrospheres'surface.Thisinterestingapproachmightopenanovel,simpleandeconomicroutetopreparingt
7、hefunctionalmicrospheres.第IV页上海交通大学硕士论文Wemixedthesecrosslinkedphosphazene-containingnanoscalematerialsintoPVAandgotanovelcontrolleddrugdeliverysystem.Themodifiedmembersshowedbetterpropertiesinswellingandmechanics.Wealsosetmethyleneblueasasampletotestthenovelcontrolleddrugdeliverysy
8、stem.Fromtheresult,wefound
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